Harley Davidson (1970 to 1972) Electra Glide / Super Glide. Service manual — page 6

(This procedure will result in approximate timing and engine can be operated in an emergency for a short period until advanced position timing can be obtained with a strobe timing light.)

At regular intervals of 5000 miles or at least once a year, have your dealer check ignition timing and, if necessary, readjust circuit breaker setting to compensate for wear on circuit breaker that may have caused a slight change in timing.

DISASSEMBLING AND ASSEMBLING

REMOVING CIRCUIT BREAKER PARTS (Figure 5-17)

Remove circuit breaker cover screws (1), cover (2) and gasket (3). Pull wire terminal (4) from breaker contact assembly (12) terminal post. Remove circuit breaker cam bolt (5). Remove breaker plate

screws (6 or 6A) and lockwashers and washers (7) or retainer (7A), to free breaker plate assembly (8).

Remove cam (9) from advance assembly (10) and remove advance assembly from gearcase cover.

To remove circuit breaker contact assembly (12) from circuit breaker plate (13), pull condenser (15), terminal from breaker contact terminal post. Also unhook flat spring from terminal post. Remove screw (11) to free point set from breaker plate (13). To remove condenser (15), remove screw and lock-washer (14) from breaker plate (13).

To disassemble advance mechanism, unhook spring (16) loops from grooves in pivot pins and slip flyweights (17) with spring from pivot pins on advance base (18). Do not remove springs from flyweights unless they are to be replaced. Roll pins (18, 19 and 20) are pressed in and can be replaced if necessary.